Hitachi UX Twin Nozzle Service Manual page 224

(2) Connect the Makeup IN joint to the shutoff valve
and fix it to the boss on the heating unit.
(3) Put the Makeup IN joint in the groove of MGV holder.
(4) Attach the MGV holder and fix the shutoff valve.
(5) Put the MGV filter, O-ring3.9, Nozzle-IN-joint and nozzle-IN joint presser foot.
(6) Assemble the shutoff valve connector.
(7) Eject ink after the assembly is completed, and confirm that there is no leak
from each joint area.
(8) Attach Head cover and Heater cover.
5-8